Function initializeHeapSnapshotSignalHandlers

lib/internal/process/pre_execution.js:512–535

()

}

function initializeHeapSnapshotSignalHandlers() {
  const signal = getOptionValue('--heapsnapshot-signal');
  const diagnosticDir = getOptionValue('--diagnostic-dir');

  if (!signal)
    return;

  require('internal/validators').validateSignalName(signal);
  const { writeHeapSnapshot } = require('v8');

  function doWriteHeapSnapshot() {
    const heapSnapshotFilename = getHeapSnapshotFilename(diagnosticDir);
    writeHeapSnapshot(heapSnapshotFilename);
  }
  process.on(signal, doWriteHeapSnapshot);

  // The code above would add the listener back during deserialization,
  // if applicable.
  if (isBuildingSnapshot()) {
    addSerializeCallback(() => {
      process.removeListener(signal, doWriteHeapSnapshot);
    });
  }
}

function setupTraceCategoryState() {
  const { isTraceCategoryEnabled } = internalBinding('trace_events');